Sonceboz ES 54 Hand-Winding Watch Movement – NOS, Swiss Made – Voumard #2

Sonceboz ES 54? (not sure, it could also be ES 55)

Scope of delivery:

Sonceboz ES 54 hand-winding watch movement, NOS and Swiss Made, 17 jewels, pin lever escapement, 27.0 mm diameter, offered as defective.

1x Sonceboz ES 54 (Kienzle 053010)?

Hand-winding movement

New old stock; since it is almost 50 years old and not complete, it is offered as defective

Diameter: approx. 27.0 mm (12“`)

Height: 4.2 mm

Pin lever escapement

17 jewels / 21600 A/h / from the 70s

It is delivered in the original plastic box as shown / Hour wheel, minute wheel and cannon pinion are missing

Hardly available any more as a replacement movement

Since the movement is almost 50 years old, it must be overhauled by a watchmaker before installation

We have summarized some useful information found on ranfft.de below, without guarantee.

Shock protected

Dm= 26.6mm, Do= 27.0 … 27.1mm

F= 0.65mm

T= 1.9mm

Do outer diameter, thus the largest. Most movements have a flange slightly larger than Dm, to rest on the case band or mounting frame.

Dm mounting diameter. With this diameter the movement fits into the aperture of the case or mounting frame.

F mounting height, distance between dial plane* and mounting flange.

T stem height, distance between dial plane* and stem center.

*) Movements with display discs on the dial side (e.g., calendar) occasionally have no dial support. In this case the surface of the discs is taken as the reference plane for H, F and T. If a dial spacer that is not permanently fixed is supplied with the movement, its additional height is stated.

Hands

1.50 x 0.90 x 0.20mm

Due to the long storage time, small traces may have formed on the movement, but this has no effect on the function. Because the movement is more than 40 years old, it should be cleaned or at least oiled before installation; a fine adjustment might be necessary.

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